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Articles 1 - 9 of 9

Full-Text Articles in Social and Behavioral Sciences

Caffeine Effects On Sequential Processing In The Equiprobable Go/Nogo Task, Robert Barry, Frances M. De Blasio, Adele E. Cave Jan 2014

Caffeine Effects On Sequential Processing In The Equiprobable Go/Nogo Task, Robert Barry, Frances M. De Blasio, Adele E. Cave

Faculty of Social Sciences - Papers (Archive)

Abstract presented at the 17th World Congress of Psychophysiology (IOP2014) of the International Organization of Psychophysiology (IOP) Hiroshima, Japan, September 23rd to 27th, 2014


Stimulus-To-Matching-Stimulus Interval Influences N1, P2, And P3b In An Equiprobable Go/Nogo Task, Genevieve Z. Steiner, Robert Barry, Craig J. Gonsalvez Jan 2014

Stimulus-To-Matching-Stimulus Interval Influences N1, P2, And P3b In An Equiprobable Go/Nogo Task, Genevieve Z. Steiner, Robert Barry, Craig J. Gonsalvez

Faculty of Social Sciences - Papers (Archive)

Previous research has shown that as the stimulus-to-matching-stimulus interval (including the target-to-target interval, TTI, and nontarget-to-nontarget interval, NNI) increases, the amplitude of the P300 ERP component increases systematically. Here, we extended previous P300 research and explored TTI and NNI effects on the various ERP components elicited in an auditory equiprobable Go/NoGo task. We also examined whether a similar mechanism was underpinning interval effects in early ERP components (e.g., N1). Thirty participants completed a specially-designed variable-ISI equiprobable task whilst their EEG activity was recorded. Component amplitudes were extracted using temporal PCA with unrestricted Varimax rotation. As expected, N1, P2, and P3b …


Mapping The Effects Of Prestimulus Eeg Band Amplitude In An Equiprobable Go/Nogo Task, Frances M. De Blasio, Robert Barry Jan 2014

Mapping The Effects Of Prestimulus Eeg Band Amplitude In An Equiprobable Go/Nogo Task, Frances M. De Blasio, Robert Barry

Faculty of Social Sciences - Papers (Archive)

Abstract presented at the 17th World Congress of Psychophysiology (IOP2014) of the International Organization of Psychophysiology (IOP) Hiroshima, Japan, September 23rd to 27th, 2014


Steady State Visually Evoked Potential (Ssvep) Phase Change As An Index Of Spatial Working Memory Task Performance: The Influence Of Nootropic Supplementation, David A. Camfield, Andrew Scholey, Richard B. Silberstein, Andrew Pipingas, Con Stough Jan 2014

Steady State Visually Evoked Potential (Ssvep) Phase Change As An Index Of Spatial Working Memory Task Performance: The Influence Of Nootropic Supplementation, David A. Camfield, Andrew Scholey, Richard B. Silberstein, Andrew Pipingas, Con Stough

Faculty of Social Sciences - Papers (Archive)

Abstract presented at the 17th World Congress of Psychophysiology (IOP2014) of the International Organization of Psychophysiology (IOP) Hiroshima, Japan, September 23rd to 27th, 2014


Sequential Processing In The Equiprobable Auditory Go/Nogo Task: Children Vs. Adults, Robert Barry, Frances M. De Blasio, Jay P. Borchard Jan 2014

Sequential Processing In The Equiprobable Auditory Go/Nogo Task: Children Vs. Adults, Robert Barry, Frances M. De Blasio, Jay P. Borchard

Faculty of Social Sciences - Papers (Archive)

Objective To compare sequential processing in the unwarned auditory equiprobable Go/NoGo task in children and adults, in the context of a recently developed adult schema. Methods Adult and child samples completed an equiprobable auditory Go/NoGo task while EEG was recorded from 19 channels. Go and NoGo ERPs were decomposed using unrestricted Varimax-rotated PCAs for the groups separately, and in combination. The separate adult and child components were compared using the Congruence Coefficient. Brain sources of each assessed component were examined using eLORETA. Results Corresponding adult/child components were tentatively identified: two N1 subcomponents (N1-1, PN) and P2, followed by N2, P3 …


Preferred Eeg Brain States At Stimulus Onset In A Fixed Interstimulus Interval Equiprobable Auditory Go/Nogo Task: A Definitive Study, Robert Barry, Frances M. De Blasio, Vilfredo De Pascalis, Diana Karamacoska Jan 2014

Preferred Eeg Brain States At Stimulus Onset In A Fixed Interstimulus Interval Equiprobable Auditory Go/Nogo Task: A Definitive Study, Robert Barry, Frances M. De Blasio, Vilfredo De Pascalis, Diana Karamacoska

Faculty of Social Sciences - Papers (Archive)

This study examined the occurrence of preferred EEG phase states at stimulus onset in an equiprobable auditory Go/NoGo task with a fixed interstimulus interval, and their effects on the resultant event-related potentials (ERPs). We used a sliding short-time FFT decomposition of the EEG at Cz for each trial to assess prestimulus EEG activity in the delta, theta, alpha and beta bands. We determined the phase of each 2. Hz narrow-band contributing to these four broad bands at 125. ms before each stimulus onset, and for the first time, avoided contamination from poststimulus EEG activity. This phase value was extrapolated 125. …


Erp Components And Performance In The Equiprobable Go/Nogo Task: Inhibition In Children, Robert Barry, Frances M. De Blasio Jan 2014

Erp Components And Performance In The Equiprobable Go/Nogo Task: Inhibition In Children, Robert Barry, Frances M. De Blasio

Faculty of Social Sciences - Papers (Archive)

Abstract presented at the 17th World Congress of Psychophysiology (IOP2014) of the International Organization of Psychophysiology (IOP) Hiroshima, Japan, September 23rd to 27th, 2014


Real-Time Task Attributes And Temporal Constraints, Amir Ashamalla, Ghassan Beydoun, N Paramesh Jan 2014

Real-Time Task Attributes And Temporal Constraints, Amir Ashamalla, Ghassan Beydoun, N Paramesh

Faculty of Engineering and Information Sciences - Papers: Part A

Real-time tasks need attributes for monitoring their execution and performing recovery actions in case of failures. Temporal constraints are a class of real-time task attributes where the constraints relate the status of the task to temporal entities. Violating temporal constraints can produce consequences of unknown severity. This paper is part of our on-going research on real-time multi agent systems constraints. We discuss the importance of temporal constraints and present a task model that explicitly represents temporal constraints. We also present our preliminary results from our initial implementation in the domain of Meeting Schedules Management involving multiple users assisted by agents.


Task-Basedwireless Mobile Agents Search And Deployment For Ad Hoc Network Establishment In Disaster Environments, Xing Su, Minjie Zhang, Quan Bai Jan 2014

Task-Basedwireless Mobile Agents Search And Deployment For Ad Hoc Network Establishment In Disaster Environments, Xing Su, Minjie Zhang, Quan Bai

Faculty of Engineering and Information Sciences - Papers: Part A

In disaster environments, due to the destruction of local communication infrastructures, wireless mobile agents (robots) are employed to search and deploy to establish ad hoc networks. With the guidance of the network, first responders can efficiently perform tasks in disaster environments. However, due to the uncertainties and complexities of disaster environments and the limited capabilities of wirelessmobile agents, it is challenging to apply wireless mobile agents to disaster environments in both theory and practice. To this end, a task-based wireless mobile agents search and deployment approach is proposed for ad hoc network establishment in disaster environments. The proposed approach consists …